Lock for fireproof structures



Dec. 26, i922.

E. OHNSTRAND. LocK FOR FlnEPRooF STRUCTURES F|LED OCTV 6. 1921.

illico. titi,

ernten.

ENOCH OENSTRAND, OF MGHAWK, NEWT CAMBRIDGE, MASSAGHUSETTS,

YORK, ASSIGNOR Ty LIBRARY BUREAU, .OF A. 'CORPORATON 0F NEW JERSEY.

i LOCK FOR FIREPRDOF STRUCTURES.

Application led October 6,1921. Serial No. 505,685.

To all yL1/10m t may concern.:

Be it known that I, Enocrr Orinsrnann, a citizen of the United States of America, and resident or' Mohawk, in the county of Herkiiner and State of N ew York, have invent-` ed new and useful Improvements in `Locks tor Fireprooi Structures, or" which the i`o1- lowing 1s a specification. v

This invention relates to hre-prooi' and lock comprises a casing for the boltinechanism mounted on the inside ofthe door and connected byineans cfa tubular connector to the dia-l plate on the outer side of the door, an Lactuating rod extendingV axially lock received therein to perinit the passage oit' acollar or other shoulder thereon 'which contacts the face plateoi'the door.` In consequence thereof ari-air space of appnreciableu sizeextends through the .insulation ot thel door, closed only 'by the` actuator portion of. the lock upon the outside and `by the bolt i 4`portion ofthe lock within, both of which are of metal, usuallyr steel, and consequently good conductors of heat. YV hen `such a structure is subjected to high temperatures, as in a tire, it has been found that the inner bolt portion of the lock sonfietiines becomes sufficiently hot .to ignite intianunable nia-v terial in contact therewith or `otherwise daniage the `contents. otY :the structure.

M(.lbjects ol" the invention areto yprevent ythe inner portion of the lock on a iire-proot rc-k ceptacle from 'being runduly heated, to reduce the oonductivepath vbetween,the inner and outer portions of thelock, and in general of this kind.

The invention involves surrounding the actuating rodwhich yentends from the bolt yeasing to the exterior of the `structure with it `further `involves insulating material.

In constructing structures ofk this kind,`

through the tubular connector `to connect the` actuating :handle with the lock` mechanism.A The opening or hole through the door is larger than the `cylindrical portion ofthe.`

to overcome the `defects ofprevious devices p means substantially yfilling the hollow connector extending yfrom the bolt casing to the exterior of the structure to prevent radiation ci"r heat longitudinally through the connector. This connector is preferably a tube, but may be a skeleton structure made up of rods, either interconnected in the forni of a lattice or separate. In particular the invention comprises ya lock oi' the type referred `to having` as a part thereof insulation filling the space between the connector and the actuating `rod disposed therein, and also the space surrounding` the connector. In the ypreferred embodiment oi the invention the portions of the insulation inside and outside the connector are integrally united together throughopenings in the connector, the openings further reducing "the transfer of heat by reducing the cross section of the connector. The outerqsurface ot the insulation 'is kpreferably tapered as is also the opening through the door thereby to effect a closer fit between the insulation and the door, the central portionof which also comprises insulation.

ln order to illustrate the invention one concrete embodiment thereof isshown lin the accompanyingdrawing, in whichy i p Fig. Alisa perspective view of a lock installed in the door oii a iireLproot' receptacle, portions of the receptacle being` shown insection; and y 2 isa section Fig. lf

The lock comprises a bolt casingA having a bolt a, an actuator-or dial @plate a dial ZJ and a `knob Z2', and afconnector` C interconnecting the bolt casing and dial plate. `The connector `is attached to bolt casing A in any convenient and `known manner, as 'by a collar c of larger diameter' than the connector. Upon connector C adjacent actuator plate .B is asimilar collar or abutment nut c adapted to Contact with theface plate l) of the receptacle door. Bolt casingA of on the line :252 kof `the lock is almost wholly containediwithin i the door, back plate E of the door contact- .and B of the lock inay be vof any desired `or v`suitable forni, the preferred form shown 1 ing a layer thereon 'of sucient thickness to Cri in thev drawing is a tube haring elongate slots c2. three in minibar7 as shown in Fig. il, but the number ot slots may be increased or diminished at will providedthe web portions oi". the connector' are sutiiciently strong for the purpose required. lVithin member il is a rod c connecting the actuator or dial t with the mechanism in bolt casing A for actuating bolt a. Thespaces between v`rod c3 and connector C' and between the tubular connector C and opening F in the walls of insulation G I fill by molding plastic insu lating material about tubular connector C and forcing itthrough the slots c2 therein so that a layer g is 'lorined within the tube C completely surrounding rod c3. A similar layer olinsulation g is likewise molded about the exterior of the tube C between collars o and c" thereon, the insulation in the slots c2 forming ribs g2 uniting the two layers g and g' into an integral mass of insulation. This outer layer of insulation g is preterably tapered toward the kcollar o as clearly indicated in Fig. 1- to it the correspondingly` tapered opening F in the wall of insulation Gr in the receptacle door. u v

While a certain amount ci heat will still be conducted within the receptacle by the metal connections betweenthe dial and the lock proper in the improved lock, exhaustive tests have shown that the amount isv-notexcessive. to forni a skeleton structure has done much i to reduce even this amount. By filling con nector C with insulating materialV and moldll the lockv opening in the door, radiation and convection of heat from the actuator plate to the lock casing is effectively prevented.

I claim: v v

1. A lock for lire-proof structuresk comprising a bolt casing adapted to be mounted inside the structure, an actuating member extendingfrom said casing to the outside of the structure, and insulating material surrounding said member and in contact therewith.

2. A lock :tor tire-proof structures com-` prising a bolt casing adapted to be mounted inside the structure7 a hollow ,connector cxtending froin said casing to the Voutside of thevr structure, and means substantially tilling the hollow connector, whereby radiation heat longitudinally through'the connector is'prevented, said means comprising actuatf ing means orthe loch and a' layer of insulating material interposedbetween said actuating means and said connector.

B. A lock 'for Vtire-proof structures comprising a bolt casing adapted to be mounted inside the structure, a hollow connector ex v tending from said casing to the outside ot the structure, and means substantially filling the hollow connector,rwhereby radiation Slotting- `the tubular yconnector C readies of heat longitudinally through the connector is prevented, said means comprising an aotuating rod and a layer ot insulating ma terial between said rod and said connector.

4. A lock for tire-prooi structures having an opening therein comprising a bolt casi ng adapted to be mounted inside the structure, a" connector extending from the casing through the opening in the structure to the inside thereof, and a covering otinsulation fast on said connector whereby the latter with the insulation thereon may be inserted as a unit to lill said opening.

f 5. A loclr for re-proot structures having a tapered opening therein comprising a bolt casing adapted to be mounted inside the structure, a connector extending from the .casing through the opening in the structure to the outside thereoi", and a tapered covering of insulation 'last on said connector shaped to fit and completely fill said opening.

6. A loclr tor tire-proof structures coinprising a bolt casing adapted to be mounted insidejthe structure, a-hollow connector extending irom said casing to Lthe outside of the structure, actuating means for said lock extending through said connector, and insulation covering the inside and outside ot said hollow connector.

7. A lock 'orlire-proof structures comprising a bolt casingadapted to be mounted inside the structure, a hollow connector extending rom said casing to the outside of the structure, actuating means for said lock within said connector said connector having openingstherethrough, and insulation lilling said openings and covering the inside'and outside of said lhollow connector.

8. A lock yfor `lire-proof structures comvprising a bolt casing adapted to be mounted inside the structure,Av a hollow connector extending i'rom said casing to the outside of the structure, actuating means for said lock within said connector said connector having openings therethrough, and an integral body ot' insulation material lling said openings andcovering the inside land outside of said hollow connecten 1 9. A lock-,for tire-proofstructures comp'rising a bolt casing adapted to be mounted 4inside the structure, a hollow connector extending Jfrom said casing to the outside of the structure, an actuating rod extending longitudinally through said connector, rsaid connector having Vopenings therethrough,

and insulation lling said openings and covering the outside of vsaid connector and substantially filling the space between said connector and actuatingfrod.

l0. A lock for fire-prooi` structures coniprising a bolt casing adapted to be mounted inside the structure', a hollow connector' extending `from saidl casing tothe outside of thestructure, an `actuating rod extending longitudinally throughy saidl connector, 'said connector having openings therethrough, and an integral body of insulation iillingsaid openings and covering the outside of said connector and substantially iilling the space between said connector and actuating rod.

11. A lock for fire-proof structures coinprisinga bolt casing adapted to be mounted inside the structure, a hollow connector eX- tending from said casing` to the outside of the structure, an actuating rod extendinglongitudinally through said connector, said connector having openings therethrough, and an integral body o'l insulation filling said openings and covering the outside ot said connector and `substantially filling the space between said connector and actuating rod, the outside of said body ofinsulation being tapered.

12. An article of manufacture 'for use in fire-proof structures comprising a tubular connector, shoulders at opposite ends of the connector, and a layeroi' insulating inaterial fast on the 'connector between said shoulders.

13. An article of manufacture for use in locks for tire-proof structures comprising a tubular connector, and a body of insulation fast thereon to form a unitary element for insertion as a unit into the connector openings of such structures. i i

14. An article of manufacture for use in locks for nre-prooi structures comprising a tubular connector, and a cylindrical layer of insulation fast thereon to "forni a unitary element for insertion as a unit into the connector openings of such structures.

15. An article of manufacture for use in locks for {ire-proof structures comprising a tubular connector, and a cylindrical layer of insulation :tast thereon to forni a unitary element, said layer being partly Within andv partly Without said connector.

16. An article oiz manufacture for use in vlocks Afor fire-proof structures comprising a tubular connector, and a cylindrical layer of insulation fastwthereon tok form a unitary element, said layer being partly Within and partly Without said connector, and integral ribs connecting the inner and outer portions of the layer of insulation through slots in said connector.

Signed by me at llion, N. Y., this 2T th day of September, 1921.

nNooH oHNsfrRaNn.` 

